Coal-screen.



1 f PATENTED MAY 23, 19'05. J. HIGKMAN.

l GOAL SCREEN.'

` APPLIUATION FILED NOV. 26. 1904.

UNITED STATES.

atented May 23, 1905.

PATENT OFFICE.

COAL-SCREEN.`

SPECIFICATION forming part of Letters Patent No. 790,572, dated May 23, 1905.

" Application flied November 26,1904. serial No. 234,355.

To @ZZ whom it may concern:

Be it known that I, JOHN I-IICKMAN, a citizen of the United States, residing at Brockton, in the county of Plymouth andState of Massachusetts, have invented an Improvement in Coal-Screens, of which the following descrip? tion, in connection with the accompanying drawings, is a specification, like numerals on the drawings representing like parts.

My invention is a screen particularly intended for convenient handling in loading coal-deliverjT wagons or coal-delivery bags at the car or elsewhere, my invention being intended to be suficiently strong and light to enable one man and his -helper to move the same readily wherever desired and adjust it to the various requirements of use, such as are met with `in handling coal for retail.

The constructional details of my invention will be pointed out in the course of the following description, reference being had to the accompanying drawings, in which- Figure 1 is a perspective View of the complete embodiment of my invention, and Fig. 2 is a perspective View of a detail thereof.

I provide a metallic frame composed, preferably, of heavy galvanized iron and consist-l ing of two relatively short front uprights l 2 and longer rear nprights 3 4, connected by horizontal bars 5 and cross-braces 6, rigidly riveted or bolted to said uprights. i rights are provided with a series of holes 7 and support three screens 8 9 10 of successively liner mesh adapted to coarse, medium, and fine coal, respectively. At their rear corners each screen is provided with a casting 11, having an eye 12 at its lower end adapted to rest against the inner side of the adjacent upright 3 or 4, as the case may be. Also the screen 8 has a similar casting 13 at its front near side, Fig. 1, and the screen 9 has a similar casting 14 at its front vfar side, as seen in Fig. 1. The screen 8 has a delivery-chute 15 at its farther side and the screen 9 a delivery-chute 16 at its near side, as seen in Fig. l, and the bottom screen 1() has a central end chute 17, these chutes being freely open and extending beyond the frame of the screen sufiiciently topermit a wagon to be loaded conveniently therefrom or to permit The u-pa usual coal-bag to be hung thereon. For the latter purpose the open upper outer ends of the respective chutes are hopper-like in shape and are provided with hooks 18 for engaging and holding the open end of a coalbag. The delivery end of the bottom screen 10 and the delivery-corner of the screens 8 and 9 are notrprovided with a casting and eye, as indicated at 13 and 14, but simply rest upon the projecting inner ends of supporting-pins, as indicated at 19. The three retaining-eyes, which are located at the npper corners and at the side opposite the chute of the screens 8 and 9, respectively, are positioned apart the correct distance to require the respective screens to be mounted at the slight vinclination desired, whereas the remaining corner 0r ch nte-corner of said screens being simply supported on a pin is free to be adjusted to a considerably greater inclination of the screen. As the bottom screen, however, delivers its coal centrally, I do not twist or incline this screen cornerwise, but' arrange both of its opposite edges directly on the supporting-pins, so that its inclination may be varied at both sides simultaneously.

From the foregoing description it will be seen that the three screens may be independently adjusted to suit the grade and quality of coal and that the three chutes are substantially equidistant from the car, which is supposed to'be at the raised end of the screen, said three chutes being located at one end, so that one attendant can readily handle the bags from all of them without inconvenience. Also they project in proper position to permit three carts to load simultaneously without interfering with each other. The chutes for this purpose are all the same length, the uppermost screen inclining diagonally cornerwise downward toward its chute at the left, the intermediate screen incliningdiagonally downward cornerwise toward its chute at the right, and the lowermost screen inclining simply downward endwise. Each chute is provided with usual deflecting-plates 20.

Having described my invention, what l claim as new, and desire to secure by Letters Patent of the United States, isq

A coal-screen, comprising a frame having IOO long corner-uprights at the rear and shorter corner-uprights at the front, all of said uprights being transversely perforated at intervals, and rigidly braced and connected immovably together, combined with three screens substantially coequal in length and longer than the length of said frame, each screen having at its opposite upper corners a casting provided with an eye arranged to aline with the perforations in the rear uprights of said frame, removable supporting-pins for entering said perforations and eyes for securing said screens in independent adjustment at their rear ends, said screens having, beyond the lower end of said frame, delivery-chutes, the chute of the upper screen projecting laterall y from one corner thereof, the chute from the second screen projecting laterally from the opposite corner of said second screen, and

the chute from the third screen projecting longitudinally from the middle of the lower end thereof, said upper and second screens being provided on their sides opposite their chutes, with castings, respectively having eyes adapted to aline with the perforations in said shorter uprights for rigidly holding the adjacent sides and corners of said screens in braced relation to the upper end thereof, and removable supporting-pins for cooperating with said shorter perforated uprights for supporting the said lower ends of said screens.

In testimony whereofI have signed my name to this specilication in the presence of two subscribing witnesses.

JOHN II'ICKMA N.

Vitnesses:

BARNET L. Hoon, JOSEPH BILLING, Jr. 

